Latest oscillation results from Daya Bay

TL;DR

The Daya Bay experiment measured neutrino oscillation parameters, including $ heta_{13}$ and $m^2_{32}$, using a large dataset of reactor antineutrinos, providing high-precision results and exploring sterile neutrino searches.

Contribution

This work presents the most recent and comprehensive measurements of neutrino oscillation parameters from Daya Bay, including new analyses based on hydrogen-capture data and sterile neutrino searches.

Findings

Precise measurement of $ heta_{13}$ and $m^2_{32}$ from 3158 days of data.

Updated results on hydrogen-capture oscillation analysis.

Constraints on light sterile neutrino parameters.

Abstract

The Daya Bay reactor neutrino experiment is the first experiment that measured a non-zero value for the neutrino mixing angle $\theta_{13}$ in 2012. Antineutrinos from six 2.9 GW$_{\text{th}}$ reactors are detected in eight identically designed detectors deployed in two near and one far underground experimental halls. The near-far arrangement in km-scale baselines of anti-neutrino detectors allows for a high-precision test of the three-neutrino oscillation framework. Daya Bay's collection of physics data already ended on December 12, 2020. This proceeding shows the measurement results of $\theta_{13}$ and the mass-squared splitting $\Delta m^2_{32}$, based on the gadolinium-capture tagged sample in the complete data set with 3158 days of operation. The latest results on the hydrogen-capture-based oscillation analysis and search for light sterile neutrino are also summarized.